YouTube Shorts caption character limit in 2026: 100 max. 15 hashtags max. Truncation, optimal length, cross-platform strategy.
YouTube Shorts caption character limit: 100 characters per post.
YouTube Shorts's caption character limit in 2026 is 100 characters per post.
The optimal caption length for YouTube Shorts engagement is well below the max. Captions that ride the ceiling are almost always padded — and YouTube Shorts's feed truncates long captions with a "...more" toggle that most viewers never tap. Aim for the first 80-120 characters to carry the hook so the visible-without-tap portion does the work; anything below the fold is for SEO and the small fraction of readers who expand.
Hashtags on YouTube Shorts: limit is 15 per post. Generous cap. Diminishing returns past 10-15 tags — the algorithm cares about relevance, not quantity. Hashtags count against the 100-character total.
Truncation behavior: YouTube Shorts cuts visible caption text at roughly 125-140 characters in feed view, then shows "...more" to expand. Mobile and desktop truncate at different points — design for the shorter mobile cut. Stories, swipe-up CTAs, and the link-in-bio reference all count against the same 100 character pool.
Note: 3 min max length per support.google.com/youtube/answer/10059070 (2026-05-21).
Cross-platform caption strategy: write the long-form caption for the platform with the most generous limit (typically Facebook or YouTube description), then trim per-platform. A single 100-character caption written for YouTube Shorts won't survive a port to Twitter (280 chars) or Bluesky (300 chars) — plan the truncation chain. The comparison table below shows caption limits across the platforms most creators cross-post to alongside YouTube Shorts.
YouTube Shorts compared against 4 platforms most creators publish to alongside it.
| Platform | Caption character limit | Category |
|---|---|---|
| YouTube Shorts | 100 chars | video-short |
| TikTok | 2,200 chars | video-short |
| Instagram Reels | 2,200 chars | video-short |
| Facebook Reels | 2,200 chars | video-short |
| Snapchat Spotlight | 160 chars | video-short |
100 characters per post. Hashtags count against this total, max 15 per post.
Front-load the hook in the first 80-120 characters. Captions that ride the 100-character max almost always under-perform tight, hook-first captions of 150-300 characters.
Around 125-140 visible characters before showing "...more". Design the first sentence to stand alone — most viewers never tap to expand.
Yes. The 100-character cap is the total including hashtags, @-mentions, and emoji. Plan accordingly.
Yes on most YouTube Shorts surfaces. Edits don't reset the post's distribution and don't re-trigger notifications — safe to fix typos or update CTAs without penalty.
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